Clay B. Siegall serves as Executive at SEATTLE GENETICS INC /WA, where they oversee executive responsibilities. Since joining the company, Clay B. Siegall has executed 841 insider transactions totaling $237.0M, demonstrating a bearish approach to their equity position. Their most recent transaction on Dec 30, 2025 involved purchasing 4,729 shares valued at $100.0K.
Clay B. Siegall currently holds 665,254 shares of SEATTLE GENETICS INC /WA (SGEN), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Clay B. Siegall has been a net seller of SGEN stock. They have purchased $3.6M and sold $233.3M worth of shares.
Clay B. Siegall's most recent insider trade was on Dec 30, 2025, when they purchased 4,729 shares at $21.15 per share.
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| $20.48 |
| Discretionary |
| Dec 19, 2025 | IMNM | $0 | Gift | 200,000 | $N/A | Discretionary |
| Dec 18, 2025 | IMNM | $1000.0K | Purchase | 46,511 | $21.50 | Discretionary |
| Aug 25, 2025 | STTK | $111.4K | Award | 128,054 | $0.87 | Discretionary |
| May 21, 2024 | IMNM | $281.6K | Purchase | 20,434 | $13.78 | Discretionary |
| May 20, 2024 | IMNM | $1.1M | Purchase | 79,566 | $13.91 | Discretionary |
| Oct 2, 2023 | IMNM | $1000.0K | Purchase | 169,204 | $5.91 | Discretionary |
| May 12, 2022 | SGEN | $276.5K | Option Exercise | 10,593 | $26.10 | Discretionary |
| May 12, 2022 | SGEN | $813.9K | Sale | 6,450 | $126.18 | Discretionary |
| May 12, 2022 | SGEN | $168.3K | Option Exercise | 6,450 | $26.10 | Discretionary |
| May 12, 2022 | SGEN | $1.3M | Sale | 10,593 | $125.39 | Discretionary |
| Apr 20, 2022 | SGEN | $272.0K | Sale | 1,885 | $144.32 | Discretionary |
| Apr 7, 2022 | SGEN | $74.5K | Sale | 474 | $157.23 | Discretionary |
| Apr 7, 2022 | SGEN | $297.3K | Sale | 1,900 | $156.48 | Discretionary |
| Apr 7, 2022 | SGEN | $12.4K | Option Exercise | 474 | $26.10 | Discretionary |
| Apr 7, 2022 | SGEN | $43.0K | Option Exercise | 1,649 | $26.10 | Discretionary |
| Apr 7, 2022 | SGEN | $249.7K | Sale | 1,649 | $151.42 | Discretionary |
| Apr 7, 2022 | SGEN | $54.8K | Option Exercise | 2,100 | $26.10 | Discretionary |
| Apr 7, 2022 | SGEN | $49.6K | Option Exercise | 1,900 | $26.10 | Discretionary |
| Apr 7, 2022 | SGEN | $596.5K | Sale | 3,828 | $155.83 | Discretionary |
| Apr 7, 2022 | SGEN | $99.9K | Option Exercise | 3,828 | $26.10 | Discretionary |
| Apr 7, 2022 | SGEN | $370.5K | Sale | 2,400 | $154.36 | Discretionary |
| Apr 7, 2022 | SGEN | $62.6K | Option Exercise | 2,400 | $26.10 | Discretionary |
| Apr 7, 2022 | SGEN | $719.7K | Sale | 4,692 | $153.38 | Discretionary |
| Apr 7, 2022 | SGEN | $122.5K | Option Exercise | 4,692 | $26.10 | Discretionary |
| Apr 7, 2022 | SGEN | $320.4K | Sale | 2,100 | $152.59 | Discretionary |
| Mar 7, 2022 | SGEN | $62.6K | Option Exercise | 2,400 | $26.10 | Discretionary |
| Mar 7, 2022 | SGEN | $104.4K | Option Exercise | 4,000 | $26.10 | Discretionary |
| Mar 7, 2022 | SGEN | $895.1K | Sale | 6,643 | $134.74 | Discretionary |